Sash-lock.



PATENTED JULY 7, 1908.

M. A. BEEMAN.

SASH LOCK.

APPLICATION FILED MAB-.18. 190a.

WMM

UNITED STATES PATENT QFFTCE.

MARCUS A. BEEMAN, OF CLEVELAND, OHlO.

SASH-LOCK.

To all whom it may concern:

Be it known that I, MARoUs A. BEEMAN, a citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Ohio, have invented a certain new and useful Improvement in Sash-Locks, of which the following is a full,.clear, and exact description, reference being had to the accompanying drawings.

The object of this invention is to provide a very simple and eflicient lock for window sashes, enabling the sashes to stand with any desired extent of opening and to close freely therefrom while preventing any movement which materially increases the opening.

The catch is adapted to be applied to the lower sash of a window and operate against the stile of the upper sash. It enables the occupant of the room to lock his window and at the same time secure desirable ventilation.

My lock is adjustable, so that it may accurately fit sashes with different degrees of play between them; it is very simple in construction, and is heat in appearance. Then it is not desired to use it, it may be turned back out of the way.

The invention consists of the means and the combinationsof parts by which I accomplish the above result as hereinafter more fully described and as definitely set out in the claims.

The drawings clearly disclose my invention.

Figure 1 is a cross section through the meeting rails of a pair of sashes, showing my lock in side elevation; Fig. 2 is a vertical section through the lock in place; Fig. 3 is a perspective view of the locking arm with its anchoring block; Fig. tis a perspective view ofthe plate 011 which this locking arm is mounted; Fig. 5 is a cross section of the lock, as indicated by the line 55 of Fig. 2.

As shown in the drawings, A represents the lower sash and B the upper sash of a window, these sashes having the usual stiles a, b, and meeting rails a, I).

My lock is secured to the upper edge of the lower sash, that is to the top of the lower stile, or the top of the lower meeting rail near itsend, as shown. It comprises a plate C which rests on this sash, a block D which is secured within the plate, and an arm E pivoted to the block and adapted to bear against the upper stile and bite into it su'fliciently to Specification of Letters Patent.

Application filed March 18, 1908.

Patented July 7, 1908.

Serial No. 421,883.

prevent any movement of the sashes relatively one past the other.

The plate (I, which rests on the lower sash, has a downturned lip c engaging the far side of that sash and limiting the position of the plate. The plate has a pair of flanges c rising from its sides. Between these flanges near the rear of the plate on the top of the base plate are grooves or serrations c and through such serrated portion is a slot 0. The block D is adapted to stand between the flanges c and has on its underside serrations d cooperating with the serrations 0*. Through an opening in this block a suitable screw F passes through the slot 0 into the sash. By this means the block may be locked in adjusted position to the base plate and sash.

The locking arm E is shown as bifurcated at e, the kerf being occupied by a tongue 011' A pm G passing through these,

the block D. parts pivots the arm to the block. This pin lies between the flanges 0, whereby it is impossible for the pin to work out even if it should be loose. It is the intention, however, to rivet the ends of this pin.

The locking arm E has a head (2 with a serrated or roughened face 0 which is formed at an angle to the shank of the arm, so that the lower portion of the face is nearer the pivot than the upper portion. When in use the face c9 lies against the stile of the upper sash. If the lower sash be drawn downward, or the n )pe r sash moved u )ward, this face simply slides over the stile. f it should be attempted, however, to raise the lower sash or to lower the upper sash, the face engages tightly against the upper sash and the shank of the arm approaches the plate, the serrations on the face biting into the upper stile so as to prevent any continuation of this movement.

It is to be ui'iderstoml that the angle at which the locking arm normallystands is such that in any movement of the sashes, the one toward the other, the arm cannot slip on the upper stile but instead will swing on its pivot and bite into that stile. If desired, a suitable elastic strip H may be applied to the face of the upper stile for the arm to engage, thus preventing marring of the stile. In ordinary usage such marring does not result, for there is a suflieient binding without the marring to show that the lock is acting, and in case anyone is attempting to force the window it is more important to have the lock effective than to. prevent the sash from being marred. The rubber strip, however, does not interfere with the effectlveness of the lock and does prevent the marring. This strip may extend for a distance corresponding to the height of the maximum opening for which any lock can be effective, that is, a space somewhat less than that through which an individual may pass.

It will be seen that when the arm E is in place, the window is automatically locked against any further opening. The engagement of the arm also prevents rattling of the sashes. When not in use, the arm E is turned backward away from the stile and holds itself in such position by gravity, the head 6 passing beyond the pivot. This is shown in dotted lines in Fig. 1. Suitable lugs e projecting from the shank of the arm furnish convenientmeans for turning it into this position.

I claim:

1. In a sash lock, the combination of a plate adapted to rest on the lower sash, an arm adapted to engage the upper sash, a block to which said arm is pivoted, and means for securing said block to said plate, whereby the arm may be held in proper cooperation with the upper sash.

2. In a sash lock, the combination of a plate adapted to rest on the lower sash, an

arm adapted to engage the upper sash, a

block to which said arm is pivoted, and a screw adapted to pass through the block and through a slot in said plate into the lower sash, whereby the arm may be held in adjusted cooperation with the upper sash.

3. In a sash lock, the combination of a plate adapted to rest on the lower sash, an arm adapted to engage the upper sash, a block to which said arm is pivoted, and means for securing said block to said plate whereby the arm may be held in proper cooperation with the upper sash, said arm having a head and being adapted to be turned back with its head beyond the pivot of the arm.

4. In a sash lock, the combination of a plate adapted to rest on the lower sash, an arm adapted to engage the upper sash, a block to which said arm is pivoted, and means for securing said block to said plate,

whereby the arm may be held in proper.

cooperation with the upper sash, said block and plate being provided with cooperating notches and recesses whereby the block may be held to the plate in various adjusted positions.

plate adapted to rest on the lower sash, an arm adapted to engage the upper sash, a

5. In a sash lock, the combination of a block to which said arm is pivoted, and means for securing said block to said plate, whereby the arm may be held in proper cooperation with the upper sash, .said plate having a pair of flanges between which said block seats.

6. In a sash lock, the combination of a plate adapted to seat on the upper edge of the lower sash and having a lip passing downward onto the far side of said sash, said plate having a slot through it, a block adapted to seat on said plate, there being an opening through the block adapted to stand above the slot, whereby a screw may be passed through such opening and slot to adjustably lock the block to the plate, and an arm pivoted to said block and having a face adapted to cooperate with the upper sash.

7. In a sash lock, the combination of a plate adapted to seat on the upper edge of the lower sash, said plate having a serrated face and having a slot through it, a block adapted to seat on said plate and having a serrated under face, there being an opening through the block adapted to stand above the slot, whereby the screw may be passed through such opening and slot to adjustably lock the block to the plate, and an arm pivoted to said block and having a face adapted to cooperate 8. In a sash lock, the combination of a plate adapted to seat on the upper edge of the lower sash, said plate having a serrated face and a pair of side flanges and having a slot through it, a block adapted to seat on said plate between said flanges and having a serrated under face, there being an opening through the block adapted to stand above the slot, whereby a screw may be passed through such opening and slot to adjustably lock the block to the plate, and an arm pivoted to said block and having a serrated face adapted to cooperate with the upper sash;

9. In a sash lock, the combination of a plate'adapted to seat on the upper edge of the lower sash and having a pair of side flanges, a block adapted to seat on said plate between said flanges, openings whereby a screw may be passed through such block and plate to adjustably lock the block to the plate, and an arm pivoted to said block and having a face adapted to cooperate with the upper sash, the pivot pin of said arm and block standing between said flanges.

In testimony whereof, I hereunto aiflx my signature in the presence of two witnesses. MARCUS A. BEEMAN.

Witnesses WM. E. TOUSLEY, O. R. BEEMAN. 

